ace.define(
  'ace/occur',
  [
    'require',
    'exports',
    'module',
    'ace/lib/oop',
    'ace/range',
    'ace/search',
    'ace/edit_session',
    'ace/search_highlight',
    'ace/lib/dom',
  ],
  function (require, exports, module) {
    'use strict';
    var oop = require('./lib/oop');
    var Range = require('./range').Range;
    var Search = require('./search').Search;
    var EditSession = require('./edit_session').EditSession;
    var SearchHighlight = require('./search_highlight').SearchHighlight;
    function Occur() {}
    oop.inherits(Occur, Search);
    (function () {
      this.enter = function (editor, options) {
        if (!options.needle) return false;
        var pos = editor.getCursorPosition();
        this.displayOccurContent(editor, options);
        var translatedPos = this.originalToOccurPosition(editor.session, pos);
        editor.moveCursorToPosition(translatedPos);
        return true;
      };
      this.exit = function (editor, options) {
        var pos = options.translatePosition && editor.getCursorPosition();
        var translatedPos = pos && this.occurToOriginalPosition(editor.session, pos);
        this.displayOriginalContent(editor);
        if (translatedPos) editor.moveCursorToPosition(translatedPos);
        return true;
      };
      this.highlight = function (sess, regexp) {
        var hl = (sess.$occurHighlight =
          sess.$occurHighlight || sess.addDynamicMarker(new SearchHighlight(null, 'ace_occur-highlight', 'text')));
        hl.setRegexp(regexp);
        sess._emit('changeBackMarker'); // force highlight layer redraw
      };
      this.displayOccurContent = function (editor, options) {
        this.$originalSession = editor.session;
        var found = this.matchingLines(editor.session, options);
        var lines = found.map(function (foundLine) {
          return foundLine.content;
        });
        var occurSession = new EditSession(lines.join('\n'));
        occurSession.$occur = this;
        occurSession.$occurMatchingLines = found;
        editor.setSession(occurSession);
        this.$useEmacsStyleLineStart = this.$originalSession.$useEmacsStyleLineStart;
        occurSession.$useEmacsStyleLineStart = this.$useEmacsStyleLineStart;
        this.highlight(occurSession, options.re);
        occurSession._emit('changeBackMarker');
      };
      this.displayOriginalContent = function (editor) {
        editor.setSession(this.$originalSession);
        this.$originalSession.$useEmacsStyleLineStart = this.$useEmacsStyleLineStart;
      };
      this.originalToOccurPosition = function (session, pos) {
        var lines = session.$occurMatchingLines;
        var nullPos = { row: 0, column: 0 };
        if (!lines) return nullPos;
        for (var i = 0; i < lines.length; i++) {
          if (lines[i].row === pos.row) return { row: i, column: pos.column };
        }
        return nullPos;
      };
      this.occurToOriginalPosition = function (session, pos) {
        var lines = session.$occurMatchingLines;
        if (!lines || !lines[pos.row]) return pos;
        return { row: lines[pos.row].row, column: pos.column };
      };
      this.matchingLines = function (session, options) {
        options = oop.mixin({}, options);
        if (!session || !options.needle) return [];
        var search = new Search();
        search.set(options);
        return search.findAll(session).reduce(function (lines, range) {
          var row = range.start.row;
          var last = lines[lines.length - 1];
          return last && last.row === row ? lines : lines.concat({ row: row, content: session.getLine(row) });
        }, []);
      };
    }.call(Occur.prototype));
    var dom = require('./lib/dom');
    dom.importCssString(
      '.ace_occur-highlight {\n\
    border-radius: 4px;\n\
    background-color: rgba(87, 255, 8, 0.25);\n\
    position: absolute;\n\
    z-index: 4;\n\
    box-sizing: border-box;\n\
    box-shadow: 0 0 4px rgb(91, 255, 50);\n\
}\n\
.ace_dark .ace_occur-highlight {\n\
    background-color: rgb(80, 140, 85);\n\
    box-shadow: 0 0 4px rgb(60, 120, 70);\n\
}\n',
      'incremental-occur-highlighting',
      false,
    );
    exports.Occur = Occur;
  },
);

ace.define(
  'ace/commands/occur_commands',
  ['require', 'exports', 'module', 'ace/config', 'ace/occur', 'ace/keyboard/hash_handler', 'ace/lib/oop'],
  function (require, exports, module) {
    var config = require('../config'),
      Occur = require('../occur').Occur;
    var occurStartCommand = {
      name: 'occur',
      exec: function (editor, options) {
        var alreadyInOccur = !!editor.session.$occur;
        var occurSessionActive = new Occur().enter(editor, options);
        if (occurSessionActive && !alreadyInOccur) OccurKeyboardHandler.installIn(editor);
      },
      readOnly: true,
    };
    var occurCommands = [
      {
        name: 'occurexit',
        bindKey: 'esc|Ctrl-G',
        exec: function (editor) {
          var occur = editor.session.$occur;
          if (!occur) return;
          occur.exit(editor, {});
          if (!editor.session.$occur) OccurKeyboardHandler.uninstallFrom(editor);
        },
        readOnly: true,
      },
      {
        name: 'occuraccept',
        bindKey: 'enter',
        exec: function (editor) {
          var occur = editor.session.$occur;
          if (!occur) return;
          occur.exit(editor, { translatePosition: true });
          if (!editor.session.$occur) OccurKeyboardHandler.uninstallFrom(editor);
        },
        readOnly: true,
      },
    ];
    var HashHandler = require('../keyboard/hash_handler').HashHandler;
    var oop = require('../lib/oop');
    function OccurKeyboardHandler() {}
    oop.inherits(OccurKeyboardHandler, HashHandler);
    (function () {
      this.isOccurHandler = true;
      this.attach = function (editor) {
        HashHandler.call(this, occurCommands, editor.commands.platform);
        this.$editor = editor;
      };
      var handleKeyboard$super = this.handleKeyboard;
      this.handleKeyboard = function (data, hashId, key, keyCode) {
        var cmd = handleKeyboard$super.call(this, data, hashId, key, keyCode);
        return cmd && cmd.command ? cmd : undefined;
      };
    }.call(OccurKeyboardHandler.prototype));
    OccurKeyboardHandler.installIn = function (editor) {
      var handler = new this();
      editor.keyBinding.addKeyboardHandler(handler);
      editor.commands.addCommands(occurCommands);
    };
    OccurKeyboardHandler.uninstallFrom = function (editor) {
      editor.commands.removeCommands(occurCommands);
      var handler = editor.getKeyboardHandler();
      if (handler.isOccurHandler) editor.keyBinding.removeKeyboardHandler(handler);
    };
    exports.occurStartCommand = occurStartCommand;
  },
);

ace.define(
  'ace/commands/incremental_search_commands',
  [
    'require',
    'exports',
    'module',
    'ace/config',
    'ace/lib/oop',
    'ace/keyboard/hash_handler',
    'ace/commands/occur_commands',
  ],
  function (require, exports, module) {
    var config = require('../config');
    var oop = require('../lib/oop');
    var HashHandler = require('../keyboard/hash_handler').HashHandler;
    var occurStartCommand = require('./occur_commands').occurStartCommand;
    exports.iSearchStartCommands = [
      {
        name: 'iSearch',
        bindKey: { win: 'Ctrl-F', mac: 'Command-F' },
        exec: function (editor, options) {
          config.loadModule(['core', 'ace/incremental_search'], function (e) {
            var iSearch = (e.iSearch = e.iSearch || new e.IncrementalSearch());
            iSearch.activate(editor, options.backwards);
            if (options.jumpToFirstMatch) iSearch.next(options);
          });
        },
        readOnly: true,
      },
      {
        name: 'iSearchBackwards',
        exec: function (editor, jumpToNext) {
          editor.execCommand('iSearch', { backwards: true });
        },
        readOnly: true,
      },
      {
        name: 'iSearchAndGo',
        bindKey: { win: 'Ctrl-K', mac: 'Command-G' },
        exec: function (editor, jumpToNext) {
          editor.execCommand('iSearch', { jumpToFirstMatch: true, useCurrentOrPrevSearch: true });
        },
        readOnly: true,
      },
      {
        name: 'iSearchBackwardsAndGo',
        bindKey: { win: 'Ctrl-Shift-K', mac: 'Command-Shift-G' },
        exec: function (editor) {
          editor.execCommand('iSearch', { jumpToFirstMatch: true, backwards: true, useCurrentOrPrevSearch: true });
        },
        readOnly: true,
      },
    ];
    exports.iSearchCommands = [
      {
        name: 'restartSearch',
        bindKey: { win: 'Ctrl-F', mac: 'Command-F' },
        exec: function (iSearch) {
          iSearch.cancelSearch(true);
        },
      },
      {
        name: 'searchForward',
        bindKey: { win: 'Ctrl-S|Ctrl-K', mac: 'Ctrl-S|Command-G' },
        exec: function (iSearch, options) {
          options.useCurrentOrPrevSearch = true;
          iSearch.next(options);
        },
      },
      {
        name: 'searchBackward',
        bindKey: { win: 'Ctrl-R|Ctrl-Shift-K', mac: 'Ctrl-R|Command-Shift-G' },
        exec: function (iSearch, options) {
          options.useCurrentOrPrevSearch = true;
          options.backwards = true;
          iSearch.next(options);
        },
      },
      {
        name: 'extendSearchTerm',
        exec: function (iSearch, string) {
          iSearch.addString(string);
        },
      },
      {
        name: 'extendSearchTermSpace',
        bindKey: 'space',
        exec: function (iSearch) {
          iSearch.addString(' ');
        },
      },
      {
        name: 'shrinkSearchTerm',
        bindKey: 'backspace',
        exec: function (iSearch) {
          iSearch.removeChar();
        },
      },
      {
        name: 'confirmSearch',
        bindKey: 'return',
        exec: function (iSearch) {
          iSearch.deactivate();
        },
      },
      {
        name: 'cancelSearch',
        bindKey: 'esc|Ctrl-G',
        exec: function (iSearch) {
          iSearch.deactivate(true);
        },
      },
      {
        name: 'occurisearch',
        bindKey: 'Ctrl-O',
        exec: function (iSearch) {
          var options = oop.mixin({}, iSearch.$options);
          iSearch.deactivate();
          occurStartCommand.exec(iSearch.$editor, options);
        },
      },
      {
        name: 'yankNextWord',
        bindKey: 'Ctrl-w',
        exec: function (iSearch) {
          var ed = iSearch.$editor,
            range = ed.selection.getRangeOfMovements(function (sel) {
              sel.moveCursorWordRight();
            }),
            string = ed.session.getTextRange(range);
          iSearch.addString(string);
        },
      },
      {
        name: 'yankNextChar',
        bindKey: 'Ctrl-Alt-y',
        exec: function (iSearch) {
          var ed = iSearch.$editor,
            range = ed.selection.getRangeOfMovements(function (sel) {
              sel.moveCursorRight();
            }),
            string = ed.session.getTextRange(range);
          iSearch.addString(string);
        },
      },
      {
        name: 'recenterTopBottom',
        bindKey: 'Ctrl-l',
        exec: function (iSearch) {
          iSearch.$editor.execCommand('recenterTopBottom');
        },
      },
      {
        name: 'selectAllMatches',
        bindKey: 'Ctrl-space',
        exec: function (iSearch) {
          var ed = iSearch.$editor,
            hl = ed.session.$isearchHighlight,
            ranges =
              hl && hl.cache
                ? hl.cache.reduce(function (ranges, ea) {
                    return ranges.concat(ea ? ea : []);
                  }, [])
                : [];
          iSearch.deactivate(false);
          ranges.forEach(ed.selection.addRange.bind(ed.selection));
        },
      },
      {
        name: 'searchAsRegExp',
        bindKey: 'Alt-r',
        exec: function (iSearch) {
          iSearch.convertNeedleToRegExp();
        },
      },
    ].map(function (cmd) {
      cmd.readOnly = true;
      cmd.isIncrementalSearchCommand = true;
      cmd.scrollIntoView = 'animate-cursor';
      return cmd;
    });
    function IncrementalSearchKeyboardHandler(iSearch) {
      this.$iSearch = iSearch;
    }
    oop.inherits(IncrementalSearchKeyboardHandler, HashHandler);
    (function () {
      this.attach = function (editor) {
        var iSearch = this.$iSearch;
        HashHandler.call(this, exports.iSearchCommands, editor.commands.platform);
        this.$commandExecHandler = editor.commands.on('exec', function (e) {
          if (!e.command.isIncrementalSearchCommand) return iSearch.deactivate();
          e.stopPropagation();
          e.preventDefault();
          var scrollTop = editor.session.getScrollTop();
          var result = e.command.exec(iSearch, e.args || {});
          editor.renderer.scrollCursorIntoView(null, 0.5);
          editor.renderer.animateScrolling(scrollTop);
          return result;
        });
      };
      this.detach = function (editor) {
        if (!this.$commandExecHandler) return;
        editor.commands.off('exec', this.$commandExecHandler);
        delete this.$commandExecHandler;
      };
      var handleKeyboard$super = this.handleKeyboard;
      this.handleKeyboard = function (data, hashId, key, keyCode) {
        if (
          ((hashId === 1 /*ctrl*/ || hashId === 8) /*command*/ && key === 'v') ||
          (hashId === 1 /*ctrl*/ && key === 'y')
        )
          return null;
        var cmd = handleKeyboard$super.call(this, data, hashId, key, keyCode);
        if (cmd && cmd.command) {
          return cmd;
        }
        if (hashId == -1) {
          var extendCmd = this.commands.extendSearchTerm;
          if (extendCmd) {
            return { command: extendCmd, args: key };
          }
        }
        return false;
      };
    }.call(IncrementalSearchKeyboardHandler.prototype));
    exports.IncrementalSearchKeyboardHandler = IncrementalSearchKeyboardHandler;
  },
);

ace.define(
  'ace/incremental_search',
  [
    'require',
    'exports',
    'module',
    'ace/lib/oop',
    'ace/range',
    'ace/search',
    'ace/search_highlight',
    'ace/commands/incremental_search_commands',
    'ace/lib/dom',
    'ace/commands/command_manager',
    'ace/editor',
    'ace/config',
  ],
  function (require, exports, module) {
    'use strict';
    var oop = require('./lib/oop');
    var Range = require('./range').Range;
    var Search = require('./search').Search;
    var SearchHighlight = require('./search_highlight').SearchHighlight;
    var iSearchCommandModule = require('./commands/incremental_search_commands');
    var ISearchKbd = iSearchCommandModule.IncrementalSearchKeyboardHandler;
    function IncrementalSearch() {
      this.$options = { wrap: false, skipCurrent: false };
      this.$keyboardHandler = new ISearchKbd(this);
    }
    oop.inherits(IncrementalSearch, Search);
    function isRegExp(obj) {
      return obj instanceof RegExp;
    }
    function regExpToObject(re) {
      var string = String(re),
        start = string.indexOf('/'),
        flagStart = string.lastIndexOf('/');
      return {
        expression: string.slice(start + 1, flagStart),
        flags: string.slice(flagStart + 1),
      };
    }
    function stringToRegExp(string, flags) {
      try {
        return new RegExp(string, flags);
      } catch (e) {
        return string;
      }
    }
    function objectToRegExp(obj) {
      return stringToRegExp(obj.expression, obj.flags);
    }
    (function () {
      this.activate = function (editor, backwards) {
        this.$editor = editor;
        this.$startPos = this.$currentPos = editor.getCursorPosition();
        this.$options.needle = '';
        this.$options.backwards = backwards;
        editor.keyBinding.addKeyboardHandler(this.$keyboardHandler);
        this.$originalEditorOnPaste = editor.onPaste;
        editor.onPaste = this.onPaste.bind(this);
        this.$mousedownHandler = editor.on('mousedown', this.onMouseDown.bind(this));
        this.selectionFix(editor);
        this.statusMessage(true);
      };
      this.deactivate = function (reset) {
        this.cancelSearch(reset);
        var editor = this.$editor;
        editor.keyBinding.removeKeyboardHandler(this.$keyboardHandler);
        if (this.$mousedownHandler) {
          editor.off('mousedown', this.$mousedownHandler);
          delete this.$mousedownHandler;
        }
        editor.onPaste = this.$originalEditorOnPaste;
        this.message('');
      };
      this.selectionFix = function (editor) {
        if (editor.selection.isEmpty() && !editor.session.$emacsMark) {
          editor.clearSelection();
        }
      };
      this.highlight = function (regexp) {
        var sess = this.$editor.session,
          hl = (sess.$isearchHighlight =
            sess.$isearchHighlight || sess.addDynamicMarker(new SearchHighlight(null, 'ace_isearch-result', 'text')));
        hl.setRegexp(regexp);
        sess._emit('changeBackMarker'); // force highlight layer redraw
      };
      this.cancelSearch = function (reset) {
        var e = this.$editor;
        this.$prevNeedle = this.$options.needle;
        this.$options.needle = '';
        if (reset) {
          e.moveCursorToPosition(this.$startPos);
          this.$currentPos = this.$startPos;
        } else {
          e.pushEmacsMark && e.pushEmacsMark(this.$startPos, false);
        }
        this.highlight(null);
        return Range.fromPoints(this.$currentPos, this.$currentPos);
      };
      this.highlightAndFindWithNeedle = function (moveToNext, needleUpdateFunc) {
        if (!this.$editor) return null;
        var options = this.$options;
        if (needleUpdateFunc) {
          options.needle = needleUpdateFunc.call(this, options.needle || '') || '';
        }
        if (options.needle.length === 0) {
          this.statusMessage(true);
          return this.cancelSearch(true);
        }
        options.start = this.$currentPos;
        var session = this.$editor.session,
          found = this.find(session),
          shouldSelect = this.$editor.emacsMark ? !!this.$editor.emacsMark() : !this.$editor.selection.isEmpty();
        if (found) {
          if (options.backwards) found = Range.fromPoints(found.end, found.start);
          this.$editor.selection.setRange(Range.fromPoints(shouldSelect ? this.$startPos : found.end, found.end));
          if (moveToNext) this.$currentPos = found.end;
          this.highlight(options.re);
        }
        this.statusMessage(found);
        return found;
      };
      this.addString = function (s) {
        return this.highlightAndFindWithNeedle(false, function (needle) {
          if (!isRegExp(needle)) return needle + s;
          var reObj = regExpToObject(needle);
          reObj.expression += s;
          return objectToRegExp(reObj);
        });
      };
      this.removeChar = function (c) {
        return this.highlightAndFindWithNeedle(false, function (needle) {
          if (!isRegExp(needle)) return needle.substring(0, needle.length - 1);
          var reObj = regExpToObject(needle);
          reObj.expression = reObj.expression.substring(0, reObj.expression.length - 1);
          return objectToRegExp(reObj);
        });
      };
      this.next = function (options) {
        options = options || {};
        this.$options.backwards = !!options.backwards;
        this.$currentPos = this.$editor.getCursorPosition();
        return this.highlightAndFindWithNeedle(true, function (needle) {
          return options.useCurrentOrPrevSearch && needle.length === 0 ? this.$prevNeedle || '' : needle;
        });
      };
      this.onMouseDown = function (evt) {
        this.deactivate();
        return true;
      };
      this.onPaste = function (text) {
        this.addString(text);
      };
      this.convertNeedleToRegExp = function () {
        return this.highlightAndFindWithNeedle(false, function (needle) {
          return isRegExp(needle) ? needle : stringToRegExp(needle, 'ig');
        });
      };
      this.convertNeedleToString = function () {
        return this.highlightAndFindWithNeedle(false, function (needle) {
          return isRegExp(needle) ? regExpToObject(needle).expression : needle;
        });
      };
      this.statusMessage = function (found) {
        var options = this.$options,
          msg = '';
        msg += options.backwards ? 'reverse-' : '';
        msg += 'isearch: ' + options.needle;
        msg += found ? '' : ' (not found)';
        this.message(msg);
      };
      this.message = function (msg) {
        if (this.$editor.showCommandLine) {
          this.$editor.showCommandLine(msg);
          this.$editor.focus();
        }
      };
    }.call(IncrementalSearch.prototype));
    exports.IncrementalSearch = IncrementalSearch;
    var dom = require('./lib/dom');
    dom.importCssString(
      '\n.ace_marker-layer .ace_isearch-result {\n  position: absolute;\n  z-index: 6;\n  box-sizing: border-box;\n}\ndiv.ace_isearch-result {\n  border-radius: 4px;\n  background-color: rgba(255, 200, 0, 0.5);\n  box-shadow: 0 0 4px rgb(255, 200, 0);\n}\n.ace_dark div.ace_isearch-result {\n  background-color: rgb(100, 110, 160);\n  box-shadow: 0 0 4px rgb(80, 90, 140);\n}',
      'incremental-search-highlighting',
      false,
    );
    var commands = require('./commands/command_manager');
    (function () {
      this.setupIncrementalSearch = function (editor, val) {
        if (this.usesIncrementalSearch == val) return;
        this.usesIncrementalSearch = val;
        var iSearchCommands = iSearchCommandModule.iSearchStartCommands;
        var method = val ? 'addCommands' : 'removeCommands';
        this[method](iSearchCommands);
      };
    }.call(commands.CommandManager.prototype));
    var Editor = require('./editor').Editor;
    require('./config').defineOptions(Editor.prototype, 'editor', {
      useIncrementalSearch: {
        set: function (val) {
          this.keyBinding.$handlers.forEach(function (handler) {
            if (handler.setupIncrementalSearch) {
              handler.setupIncrementalSearch(this, val);
            }
          });
          this._emit('incrementalSearchSettingChanged', { isEnabled: val });
        },
      },
    });
  },
);

ace.define(
  'ace/keyboard/emacs',
  [
    'require',
    'exports',
    'module',
    'ace/lib/dom',
    'ace/incremental_search',
    'ace/commands/incremental_search_commands',
    'ace/keyboard/hash_handler',
    'ace/lib/keys',
  ],
  function (require, exports, module) {
    'use strict';
    var dom = require('../lib/dom');
    require('../incremental_search');
    var iSearchCommandModule = require('../commands/incremental_search_commands');
    var HashHandler = require('./hash_handler').HashHandler;
    exports.handler = new HashHandler();
    exports.handler.isEmacs = true;
    exports.handler.$id = 'ace/keyboard/emacs';
    dom.importCssString(
      '\n.emacs-mode .ace_cursor{\n    border: 1px rgba(50,250,50,0.8) solid!important;\n    box-sizing: border-box!important;\n    background-color: rgba(0,250,0,0.9);\n    opacity: 0.5;\n}\n.emacs-mode .ace_hidden-cursors .ace_cursor{\n    opacity: 1;\n    background-color: transparent;\n}\n.emacs-mode .ace_overwrite-cursors .ace_cursor {\n    opacity: 1;\n    background-color: transparent;\n    border-width: 0 0 2px 2px !important;\n}\n.emacs-mode .ace_text-layer {\n    z-index: 4\n}\n.emacs-mode .ace_cursor-layer {\n    z-index: 2\n}',
      'emacsMode',
    );
    var $formerLongWords;
    var $formerLineStart;
    exports.handler.attach = function (editor) {
      $formerLongWords = editor.session.$selectLongWords;
      editor.session.$selectLongWords = true;
      $formerLineStart = editor.session.$useEmacsStyleLineStart;
      editor.session.$useEmacsStyleLineStart = true;
      editor.session.$emacsMark = null; // the active mark
      editor.session.$emacsMarkRing = editor.session.$emacsMarkRing || [];
      editor.emacsMark = function () {
        return this.session.$emacsMark;
      };
      editor.setEmacsMark = function (p) {
        this.session.$emacsMark = p;
      };
      editor.pushEmacsMark = function (p, activate) {
        var prevMark = this.session.$emacsMark;
        if (prevMark) this.session.$emacsMarkRing.push(prevMark);
        if (!p || activate) this.setEmacsMark(p);
        else this.session.$emacsMarkRing.push(p);
      };
      editor.popEmacsMark = function () {
        var mark = this.emacsMark();
        if (mark) {
          this.setEmacsMark(null);
          return mark;
        }
        return this.session.$emacsMarkRing.pop();
      };
      editor.getLastEmacsMark = function (p) {
        return this.session.$emacsMark || this.session.$emacsMarkRing.slice(-1)[0];
      };
      editor.emacsMarkForSelection = function (replacement) {
        var sel = this.selection,
          multiRangeLength = this.multiSelect ? this.multiSelect.getAllRanges().length : 1,
          selIndex = sel.index || 0,
          markRing = this.session.$emacsMarkRing,
          markIndex = markRing.length - (multiRangeLength - selIndex),
          lastMark = markRing[markIndex] || sel.anchor;
        if (replacement) {
          markRing.splice(markIndex, 1, 'row' in replacement && 'column' in replacement ? replacement : undefined);
        }
        return lastMark;
      };
      editor.on('click', $resetMarkMode);
      editor.on('changeSession', $kbSessionChange);
      editor.renderer.$blockCursor = true;
      editor.setStyle('emacs-mode');
      editor.commands.addCommands(commands);
      exports.handler.platform = editor.commands.platform;
      editor.$emacsModeHandler = this;
      editor.on('copy', this.onCopy);
      editor.on('paste', this.onPaste);
    };
    exports.handler.detach = function (editor) {
      editor.renderer.$blockCursor = false;
      editor.session.$selectLongWords = $formerLongWords;
      editor.session.$useEmacsStyleLineStart = $formerLineStart;
      editor.off('click', $resetMarkMode);
      editor.off('changeSession', $kbSessionChange);
      editor.unsetStyle('emacs-mode');
      editor.commands.removeCommands(commands);
      editor.off('copy', this.onCopy);
      editor.off('paste', this.onPaste);
      editor.$emacsModeHandler = null;
    };
    var $kbSessionChange = function (e) {
      if (e.oldSession) {
        e.oldSession.$selectLongWords = $formerLongWords;
        e.oldSession.$useEmacsStyleLineStart = $formerLineStart;
      }
      $formerLongWords = e.session.$selectLongWords;
      e.session.$selectLongWords = true;
      $formerLineStart = e.session.$useEmacsStyleLineStart;
      e.session.$useEmacsStyleLineStart = true;
      if (!e.session.hasOwnProperty('$emacsMark')) e.session.$emacsMark = null;
      if (!e.session.hasOwnProperty('$emacsMarkRing')) e.session.$emacsMarkRing = [];
    };
    var $resetMarkMode = function (e) {
      e.editor.session.$emacsMark = null;
    };
    var keys = require('../lib/keys').KEY_MODS;
    var eMods = { C: 'ctrl', S: 'shift', M: 'alt', CMD: 'command' };
    var combinations = [
      'C-S-M-CMD',
      'S-M-CMD',
      'C-M-CMD',
      'C-S-CMD',
      'C-S-M',
      'M-CMD',
      'S-CMD',
      'S-M',
      'C-CMD',
      'C-M',
      'C-S',
      'CMD',
      'M',
      'S',
      'C',
    ];
    combinations.forEach(function (c) {
      var hashId = 0;
      c.split('-').forEach(function (c) {
        hashId = hashId | keys[eMods[c]];
      });
      eMods[hashId] = c.toLowerCase() + '-';
    });
    exports.handler.onCopy = function (e, editor) {
      if (editor.$handlesEmacsOnCopy) return;
      editor.$handlesEmacsOnCopy = true;
      exports.handler.commands.killRingSave.exec(editor);
      editor.$handlesEmacsOnCopy = false;
    };
    exports.handler.onPaste = function (e, editor) {
      editor.pushEmacsMark(editor.getCursorPosition());
    };
    exports.handler.bindKey = function (key, command) {
      if (typeof key == 'object') key = key[this.platform];
      if (!key) return;
      var ckb = this.commandKeyBinding;
      key.split('|').forEach(function (keyPart) {
        keyPart = keyPart.toLowerCase();
        ckb[keyPart] = command;
        var keyParts = keyPart.split(' ').slice(0, -1);
        keyParts
          .reduce(function (keyMapKeys, keyPart, i) {
            var prefix = keyMapKeys[i - 1] ? keyMapKeys[i - 1] + ' ' : '';
            return keyMapKeys.concat([prefix + keyPart]);
          }, [])
          .forEach(function (keyPart) {
            if (!ckb[keyPart]) ckb[keyPart] = 'null';
          });
      }, this);
    };
    exports.handler.getStatusText = function (editor, data) {
      var str = '';
      if (data.count) str += data.count;
      if (data.keyChain) str += ' ' + data.keyChain;
      return str;
    };
    exports.handler.handleKeyboard = function (data, hashId, key, keyCode) {
      if (keyCode === -1) return undefined;
      var editor = data.editor;
      editor._signal('changeStatus');
      if (hashId == -1) {
        editor.pushEmacsMark();
        if (data.count) {
          var str = new Array(data.count + 1).join(key);
          data.count = null;
          return { command: 'insertstring', args: str };
        }
      }
      var modifier = eMods[hashId];
      if (modifier == 'c-' || data.count) {
        var count = parseInt(key[key.length - 1]);
        if (typeof count === 'number' && !isNaN(count)) {
          data.count = Math.max(data.count, 0) || 0;
          data.count = 10 * data.count + count;
          return { command: 'null' };
        }
      }
      if (modifier) key = modifier + key;
      if (data.keyChain) key = data.keyChain += ' ' + key;
      var command = this.commandKeyBinding[key];
      data.keyChain = command == 'null' ? key : '';
      if (!command) return undefined;
      if (command === 'null') return { command: 'null' };
      if (command === 'universalArgument') {
        data.count = -4;
        return { command: 'null' };
      }
      var args;
      if (typeof command !== 'string') {
        args = command.args;
        if (command.command) command = command.command;
        if (command === 'goorselect') {
          command = editor.emacsMark() ? args[1] : args[0];
          args = null;
        }
      }
      if (typeof command === 'string') {
        if (command === 'insertstring' || command === 'splitline' || command === 'togglecomment') {
          editor.pushEmacsMark();
        }
        command = this.commands[command] || editor.commands.commands[command];
        if (!command) return undefined;
      }
      if (!command.readOnly && !command.isYank) data.lastCommand = null;
      if (!command.readOnly && editor.emacsMark()) editor.setEmacsMark(null);
      if (data.count) {
        var count = data.count;
        data.count = 0;
        if (!command || !command.handlesCount) {
          return {
            args: args,
            command: {
              exec: function (editor, args) {
                for (var i = 0; i < count; i++) command.exec(editor, args);
              },
              multiSelectAction: command.multiSelectAction,
            },
          };
        } else {
          if (!args) args = {};
          if (typeof args === 'object') args.count = count;
        }
      }
      return { command: command, args: args };
    };
    exports.emacsKeys = {
      'Up|C-p': { command: 'goorselect', args: ['golineup', 'selectup'] },
      'Down|C-n': { command: 'goorselect', args: ['golinedown', 'selectdown'] },
      'Left|C-b': { command: 'goorselect', args: ['gotoleft', 'selectleft'] },
      'Right|C-f': { command: 'goorselect', args: ['gotoright', 'selectright'] },
      'C-Left|M-b': { command: 'goorselect', args: ['gotowordleft', 'selectwordleft'] },
      'C-Right|M-f': { command: 'goorselect', args: ['gotowordright', 'selectwordright'] },
      'Home|C-a': { command: 'goorselect', args: ['gotolinestart', 'selecttolinestart'] },
      'End|C-e': { command: 'goorselect', args: ['gotolineend', 'selecttolineend'] },
      'C-Home|S-M-,': { command: 'goorselect', args: ['gotostart', 'selecttostart'] },
      'C-End|S-M-.': { command: 'goorselect', args: ['gotoend', 'selecttoend'] },
      'S-Up|S-C-p': 'selectup',
      'S-Down|S-C-n': 'selectdown',
      'S-Left|S-C-b': 'selectleft',
      'S-Right|S-C-f': 'selectright',
      'S-C-Left|S-M-b': 'selectwordleft',
      'S-C-Right|S-M-f': 'selectwordright',
      'S-Home|S-C-a': 'selecttolinestart',
      'S-End|S-C-e': 'selecttolineend',
      'S-C-Home': 'selecttostart',
      'S-C-End': 'selecttoend',
      'C-l': 'recenterTopBottom',
      'M-s': 'centerselection',
      'M-g': 'gotoline',
      'C-x C-p': 'selectall',
      'C-Down': { command: 'goorselect', args: ['gotopagedown', 'selectpagedown'] },
      'C-Up': { command: 'goorselect', args: ['gotopageup', 'selectpageup'] },
      'PageDown|C-v': { command: 'goorselect', args: ['gotopagedown', 'selectpagedown'] },
      'PageUp|M-v': { command: 'goorselect', args: ['gotopageup', 'selectpageup'] },
      'S-C-Down': 'selectpagedown',
      'S-C-Up': 'selectpageup',
      'C-s': 'iSearch',
      'C-r': 'iSearchBackwards',
      'M-C-s': 'findnext',
      'M-C-r': 'findprevious',
      'S-M-5': 'replace',
      Backspace: 'backspace',
      'Delete|C-d': 'del',
      'Return|C-m': { command: 'insertstring', args: '\n' },
      'C-o': 'splitline',
      'M-d|C-Delete': { command: 'killWord', args: 'right' },
      'C-Backspace|M-Backspace|M-Delete': { command: 'killWord', args: 'left' },
      'C-k': 'killLine',
      'C-y|S-Delete': 'yank',
      'M-y': 'yankRotate',
      'C-g': 'keyboardQuit',
      'C-w|C-S-W': 'killRegion',
      'M-w': 'killRingSave',
      'C-Space': 'setMark',
      'C-x C-x': 'exchangePointAndMark',
      'C-t': 'transposeletters',
      'M-u': 'touppercase',
      'M-l': 'tolowercase',
      'M-/': 'autocomplete',
      'C-u': 'universalArgument',
      'M-;': 'togglecomment',
      'C-/|C-x u|S-C--|C-z': 'undo',
      'S-C-/|S-C-x u|C--|S-C-z': 'redo',
      'C-x r': 'selectRectangularRegion',
      'M-x': { command: 'focusCommandLine', args: 'M-x ' },
    };
    exports.handler.bindKeys(exports.emacsKeys);
    exports.handler.addCommands({
      recenterTopBottom: function (editor) {
        var renderer = editor.renderer;
        var pos = renderer.$cursorLayer.getPixelPosition();
        var h = renderer.$size.scrollerHeight - renderer.lineHeight;
        var scrollTop = renderer.scrollTop;
        if (Math.abs(pos.top - scrollTop) < 2) {
          scrollTop = pos.top - h;
        } else if (Math.abs(pos.top - scrollTop - h * 0.5) < 2) {
          scrollTop = pos.top;
        } else {
          scrollTop = pos.top - h * 0.5;
        }
        editor.session.setScrollTop(scrollTop);
      },
      selectRectangularRegion: function (editor) {
        editor.multiSelect.toggleBlockSelection();
      },
      setMark: {
        exec: function (editor, args) {
          if (args && args.count) {
            if (editor.inMultiSelectMode) editor.forEachSelection(moveToMark);
            else moveToMark();
            moveToMark();
            return;
          }
          var mark = editor.emacsMark(),
            ranges = editor.selection.getAllRanges(),
            rangePositions = ranges.map(function (r) {
              return { row: r.start.row, column: r.start.column };
            }),
            transientMarkModeActive = true,
            hasNoSelection = ranges.every(function (range) {
              return range.isEmpty();
            });
          if (transientMarkModeActive && (mark || !hasNoSelection)) {
            if (editor.inMultiSelectMode) editor.forEachSelection({ exec: editor.clearSelection.bind(editor) });
            else editor.clearSelection();
            if (mark) editor.pushEmacsMark(null);
            return;
          }
          if (!mark) {
            rangePositions.forEach(function (pos) {
              editor.pushEmacsMark(pos);
            });
            editor.setEmacsMark(rangePositions[rangePositions.length - 1]);
            return;
          }
          function moveToMark() {
            var mark = editor.popEmacsMark();
            mark && editor.moveCursorToPosition(mark);
          }
        },
        readOnly: true,
        handlesCount: true,
      },
      exchangePointAndMark: {
        exec: function exchangePointAndMark$exec(editor, args) {
          var sel = editor.selection;
          if (!args.count && !sel.isEmpty()) {
            // just invert selection
            sel.setSelectionRange(sel.getRange(), !sel.isBackwards());
            return;
          }
          if (args.count) {
            // replace mark and point
            var pos = { row: sel.lead.row, column: sel.lead.column };
            sel.clearSelection();
            sel.moveCursorToPosition(editor.emacsMarkForSelection(pos));
          } else {
            // create selection to last mark
            sel.selectToPosition(editor.emacsMarkForSelection());
          }
        },
        readOnly: true,
        handlesCount: true,
        multiSelectAction: 'forEach',
      },
      killWord: {
        exec: function (editor, dir) {
          editor.clearSelection();
          if (dir == 'left') editor.selection.selectWordLeft();
          else editor.selection.selectWordRight();
          var range = editor.getSelectionRange();
          var text = editor.session.getTextRange(range);
          exports.killRing.add(text);
          editor.session.remove(range);
          editor.clearSelection();
        },
        multiSelectAction: 'forEach',
      },
      killLine: function (editor) {
        editor.pushEmacsMark(null);
        editor.clearSelection();
        var range = editor.getSelectionRange();
        var line = editor.session.getLine(range.start.row);
        range.end.column = line.length;
        line = line.substr(range.start.column);
        var foldLine = editor.session.getFoldLine(range.start.row);
        if (foldLine && range.end.row != foldLine.end.row) {
          range.end.row = foldLine.end.row;
          line = 'x';
        }
        if (/^\s*$/.test(line)) {
          range.end.row++;
          line = editor.session.getLine(range.end.row);
          range.end.column = /^\s*$/.test(line) ? line.length : 0;
        }
        var text = editor.session.getTextRange(range);
        if (editor.prevOp.command == this) exports.killRing.append(text);
        else exports.killRing.add(text);
        editor.session.remove(range);
        editor.clearSelection();
      },
      yank: function (editor) {
        editor.onPaste(exports.killRing.get() || '');
        editor.keyBinding.$data.lastCommand = 'yank';
      },
      yankRotate: function (editor) {
        if (editor.keyBinding.$data.lastCommand != 'yank') return;
        editor.undo();
        editor.session.$emacsMarkRing.pop(); // also undo recording mark
        editor.onPaste(exports.killRing.rotate());
        editor.keyBinding.$data.lastCommand = 'yank';
      },
      killRegion: {
        exec: function (editor) {
          exports.killRing.add(editor.getCopyText());
          editor.commands.byName.cut.exec(editor);
          editor.setEmacsMark(null);
        },
        readOnly: true,
        multiSelectAction: 'forEach',
      },
      killRingSave: {
        exec: function (editor) {
          editor.$handlesEmacsOnCopy = true;
          var marks = editor.session.$emacsMarkRing.slice(),
            deselectedMarks = [];
          exports.killRing.add(editor.getCopyText());
          setTimeout(function () {
            function deselect() {
              var sel = editor.selection,
                range = sel.getRange(),
                pos = sel.isBackwards() ? range.end : range.start;
              deselectedMarks.push({ row: pos.row, column: pos.column });
              sel.clearSelection();
            }
            editor.$handlesEmacsOnCopy = false;
            if (editor.inMultiSelectMode) editor.forEachSelection({ exec: deselect });
            else deselect();
            editor.setEmacsMark(null);
            editor.session.$emacsMarkRing = marks.concat(deselectedMarks.reverse());
          }, 0);
        },
        readOnly: true,
      },
      keyboardQuit: function (editor) {
        editor.selection.clearSelection();
        editor.setEmacsMark(null);
        editor.keyBinding.$data.count = null;
      },
      focusCommandLine: function (editor, arg) {
        if (editor.showCommandLine) editor.showCommandLine(arg);
      },
    });
    exports.handler.addCommands(iSearchCommandModule.iSearchStartCommands);
    var commands = exports.handler.commands;
    commands.yank.isYank = true;
    commands.yankRotate.isYank = true;
    exports.killRing = {
      $data: [],
      add: function (str) {
        str && this.$data.push(str);
        if (this.$data.length > 30) this.$data.shift();
      },
      append: function (str) {
        var idx = this.$data.length - 1;
        var text = this.$data[idx] || '';
        if (str) text += str;
        if (text) this.$data[idx] = text;
      },
      get: function (n) {
        n = n || 1;
        return this.$data
          .slice(this.$data.length - n, this.$data.length)
          .reverse()
          .join('\n');
      },
      pop: function () {
        if (this.$data.length > 1) this.$data.pop();
        return this.get();
      },
      rotate: function () {
        this.$data.unshift(this.$data.pop());
        return this.get();
      },
    };
  },
);
(function () {
  ace.require(['ace/keyboard/emacs'], function (m) {
    if (typeof module == 'object' && typeof exports == 'object' && module) {
      module.exports = m;
    }
  });
})();
